Hoisting and conveying apparatus.



Patented Oct. [4, I902.

M. A. 81. 0. W. CALLAHAN. HOISTING AND CONVEYING APPARATUS. (Applicationfiled Mar. 6, 1901.)

(No Model.)

Z/Z/ 272255555: 4. 5 8e. D

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UNITED STATES PATENT OFFICE.

MARK A. OALLAHAN AND OWEN lV. OALLAHAN, OF CLEVELAND, OI-IIO.

HOISTING AND CONV EYING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 710,948, dated October14, 1902.

Application filed March 5,1901. Serial No. 49,921. (No model.)

T 0 (m l whom it may concern:

Be it known that we, MARK A. CALLAHAN and OWEN \V. OALLAHAN, citizens ofthe United States, residing at Cleveland, in the county of Ouyahoga andState of Ohio, have invented certain new and useful Improvements inHoisting and Conveying Apparatus; and we hereby declare the following tobe a full, clear, and exact description of the invention, such as willenable others skilled in the art to which it pertains to make and usethe same.

Our invention relates to carriages for cablecarriers, such as areemployed for transporting, elevating, or lowering sand or other roughmaterial by means of a bucket or otherwise.

Our invention consists in the peculiar construction of the carriage,whereby the hoisting, lowering, and transporting cable maybe employedfor the purpose of releasing the grapple-hook from the carriage after ithas been automatically locked thereto.

Our invention also consists in other features of construction, whichwill be hereinafter fully set forth and claimed.

In the drawings, Figure I is a view in side elevation of acableway-carriage, illustrating the same in vertical sectional view andmounted on a cableway with the grapple-hook locked in position. Fig. IIillustrates the position of the parts when the engaging hook of thecarriage is automatically released from the locking-hook, and it alsoshows a signaling device in the position it assumes when the lock isopen, so as to allow of the descent of the hook. naling device which maybe used in certain weather or at night-time.

The object of our invention is to provide means whereby the engineer hasat all times control both of the hoisting and lowering and transportingof the carriage or lead through the hoisting and lowering cable and toprovide a locking device for securing the grapple-hook and its load tothe carriage after it has been hoisted, thus making the carriage receivethe load and carrying it independent of the hoisting-cable.

It is a well-known fact that in many of the cableways employed intransporting sand and like material in the building of sewers Fig. IIIis a modified form of sig-.

and like work, owing to the fact that the carriage is called upon tohoist and lower at any part of the cableway, the employment of lockingdevices has been discarded, inasmuch as most, if not all, of them aredependent upon their stops, located a predetermined part of the eablewayfor engaging trip devices for releasing the grapple-hook from thecarriage, or in some of the cableways a tripdevice was employed, wherebythe grapple-hook is released from the carriage through the medium of arope which extends far enough from the carriage to be grasped andmanipulated bya laborer. When it is desired to disengage thegrapple-hook, this rope is tightened or pulled upon, and being at itsupper end connected to the locking mechanism it will thus act to releasethe same from the grapple-hook. As

heretofore stated, both these methods are obor stop devicesare practicalon the cableway.

The second method necessitates a constant employment of an attendant tomanipulate the rope, and in some cases the rope itself trailing is aptto get caught in the sheathing or scaffolding and releases the lockingdevice before such action is desired or foreseen and renderan accidentveryliable. However, the employment of the hoisting and lowering cablealone is also objectionable, inasmuch as the weight is entirelysustained bysuch cable after the load has been hoisted and while it isbeing carried and transferred along the cableway. This brings a stressupon the engine-dru ms and friction mechanism and a constant stress uponthe cable, and the jerking of the load as it is being transferred is aptto snap the cable if it is in any way weak, and thusthe load is dropped.

In our invention all the above difficulties are obviated by thefollowing construction, which is the one we prefer to employ to carryout our invention.

A represents a framework of the carriage, which may be of any suitableconstruction capable of mounting and retaining the operative parts ofthe carriage.

4 Mounted at the upper part of the frame A are two cable-sheaves B andB, whichare journaled in the frame A and are grooved so r no IOO

as to run on the cableway 0, whereby the carriage may be transferredfrom place to place along the way.

D D represent sheaves also mounted in the frame A and grooved to receivethe hoistingcable F.

G represents a grapple-hook which is provided with a sheave G, throughwhich the hoisting -cable F passes and by means of which thehoisting-cable engages the grapplehook to manipulate the load.

The grapple-hook Gis formed hook-shaped at its lower end and is providedwith an opening 9, which is elongated in shape and serves to admit thelocking-hook of the carriage to engage at its lower end with thegrapple-hook as the load is hoisted (see Fig. I) and at the same timeallows of the grapple-hook being elevated quite a distance for thepurpose of automatically engaging the locking device to open it, asillustrated in Fig. II of the drawings.

J represents our improved locking device, which consists, essentially,of a pivoted hookshaped lever J, having a nose j, adapted to engage inthe slot g, as illustrated in Fig. I, thus sustaining any load that maybe attached to the grapple-hook. The locking-lever J is pivoted at oneside, as at 7' thus giving a tendency to said lever when engaged by thegrapple-hookto retain its locked position, the weight of the load beingon one side of the pivotal point 7' J represents a stop projection whichengages with a pin J for the purpose of preventing the furtheradvancement of the locking-lever and also acts, in connection with thepin J as an auxiliary support to the pivotj? in holding the load.Depending downward from the pivotal point'j is an arm K, which ispreferably formed in one piece with the lever J, or integral therewith.This arm K extends downward beneath the nosejofthe locking device J andis curved sufficiently toward the same at its lower end to just allowfor the passage of the eye portion provided with the opening g.

The thickness of the arm K is such that it will freely enter the slot gat. the upper end of the grapple-hook G, as illustrated in Fig. II ofthe drawings. Above and contiguous to the pivotal portion 7' we providea cam having the faces Z Z, upon either of which rests a spring L, thetension of said spring being toward the face of the cam and its functionbeing to hold the lock closed when it presses on face Z and to holdthelock open when it presses on face Z. (See Fig. I and II, respectively.)7

At the upper end of the lock-arm J and to one side of the pivotal pointJ is pivotally secured a vertically-reciprocating rod N. This isreciprocated by the movement of said locking-arm J as the same movesfrom looking to unlocking positions, or vice versa. To the upper end ofthe reciprocating rod N is secured a signaling device, which we preferto construct, as illustrated in the drawings,

will cause the signal to assume either the position shown in Fig. I orthat shown in Fig. II, accordingly as the locking device is open orclosed- To the upper end of the signaling device a suitable target P ispreferably secured. This target, however, may be replaced by a lantern,as illustrated in Fig. III, if desired, for use in dark weather or atnighttime. p

The operation of our device is as follows: Assuming the position of thegrapple-hook to be as illustrated in Fig. I of the drawings, thecarriage is moved along the way 0 to the desired position where it isintended-to lower said grapple-hook G. The cable F is now wound up untilthe grapple-hook assumes the position illustrated in Fig. II. Thisthrows the locking-arm J to one side and at the same time throws the armK to one side with said locking-arm J. The spring Lcomes into play onthe face Z and holds the lock open and in such position that the curvedportion In of the arm K is directly beneath the upper end of thegrapple-hook and within the slot g, closing the opening or mouth A ofthe carriage A. At the same time that the locking device assumes thisposition the target is raised, as illustrated in Fig. II, and indicatesto the engineer that the locking device is open, upon which the actionof the cable F is reversed,"

or, in other words, the hoisting-drum isallowed to unwind, and thegrapple-hook passing downward clears the nose j of the lock J andengages the curved portion is of the arm K, thus throwing the look backto the position shown in Fig. Iand, lowering the target, the spring Lcomes into play upon the face Z and keeps the lock in this position. Thehook G being meanwhile lowered with its load or without its load,reaches its predermined position for engaging or discharginga load, and

when either function is performed and it is desired to again hoist thegrapple-hook the cable F is wound up until the hook reaches the mouth Aof the carriage A, and its upper end g engages the tapering lower sideof the nose j of the lock-arm J, throws the lock-arm back and atthe sametime slightly raising and agitating the target B as a signal to theengineer that the grapple-hook is locked to the carriage. Immediatelyafter the upper end g of the grapple-hook has thrown the nose jsufficiently to one side to effect its entrance into mouth A, the nosej, owing to gravity enters the slot g beneath the end g, and the rope Fbeing lowered end g will be supported on the nose j. Thus it will beseen that the engineer is at all times notified of the position, and hascontrol of the grapple-hook and its 'load and can -manipulate the sameby means of a hoisting-cable F alone. It will also be seen that thegrapple-hook is locked to the carriage A, as illustrated in Fig. I ofthe drawings, that the load is supported by the carriage withoutstraining the cable For relying upon it for support, thus obviatingaccidents andincreasing the life of the cable.

We have illustrated in the drawings and set forth in the specificationhereinbefore certain preferred details of construction and theirconsequent operation; but we do not wish to be limited to these details,inasmuch as they may be modified Without departing from our invention.

lVhat We claim is 1. In a hoisting and conveying apparatus of the typeset forth, the combination with the carriage, of a locking devicesecured to said carriage, a signaling device operated by said lockingdevice to indicate its locked and unlocked position, and a hook adaptedto be engaged by said locking device with means for raising and loweringsaid hook.

2. In a hoisting and conveying apparatus of the type set forth, thecombination with the carriage, of a locking mechanism secured to andoperating in said carriage, an indicator or signaling device alsosecured to the carriage and operated by the locking mechanism, of agrapple-hook adapted to be raised and lowered in relation to thecarriage and to be locked by the locking device when in its raisedposition, with means for raising and lowering said grapple-hook.

3. A hoisting and conveying apparatus of the type set forth, comprising,a Way, a carriage adapted to travel on said way a loadengaging deviceadapted to be raised and lowered in relation to said carriage, meansconnected with the carriage for raising and lowering the engagingdevice, means also connected with the carriage for locking theload-engaging device to said carriage, means operated by theload-engaging device for automatically opening said locking device and.

signaling means for indicating the position of the locking device.

at. In a hoisting and conveying apparatus of the type set forth, thecombination with a carriage, of a locking mechanism adapted to engageand lock a load-engaging device and a signaling device adapted to beoperated by the locking mechanism for the purpose set forth.

5. A hoisting and conveying apparatus of the type set forth, whichcomprises a carriage carrying a load-engaging device With means forlocking the load device and a signal indicating the various positions ofthe locking means, substantially as described.

6. In a hoisting and conveying apparatus of the type set forth, thecombination with the carriage carrying the load-engaging device, ofmeans for locking the load-engaging device, and a signal connected tothe locking means and actuated by the load-engaging device forindicating the various positions of the latter, substantially asdescribed.

7. In a hoisting and conveying apparatus of the type set forth, thecombination with the carriage and the load-engaging device carriedthereby, of means for locking the loadengaging device and having asignal connected thereto, said means and the signal being actuated bythe load-engaging device and means for operating the load-engagingdevice, substantially as described.

Signed by us at Cleveland, in the county of Cuyahoga and State of Ohio,this 6th day of February, 1901.

MARK A. CALLAHAN. OWEN \V. OALLAHAN. \Vitnesses:

E. B. DONNELLY, W. E. DONNELLY.

